2220012 has 18 divisors (see below), whose sum is σ = 5611788.
Its totient is φ = 739992.
The previous prime is 2220007. The next prime is 2220041. The reversal of 2220012 is 2100222.
It is a tau number, because it is divible by the number of its divisors (18).
It is a Harshad number since it is a multiple of its sum of digits (9).
It is a junction number, because it is equal to n+sod(n) for n = 2219976 and 2220003.
It is an unprimeable number.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30798 + ... + 30869.
It is an arithmetic number, because the mean of its divisors is an integer number (311766).
22220012 is an apocalyptic number.
It is an amenable number.
2220012 is an abundant number, since it is smaller than the sum of its proper divisors (3391776).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
2220012 is a wasteful number, since it uses less digits than its factorization.
2220012 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 61677 (or 61672 counting only the distinct ones).
The product of its (nonzero) digits is 16, while the sum is 9.
The square root of 2220012 is about 1489.9704695060.
The cubic root of 2220012 is about 130.4523100504.
Adding to 2220012 its reverse (2100222), we get a palindrome (4320234).
The spelling of 2220012 in words is "two million, two hundred twenty thousand, twelve".